<template>
  <div class="component-upload-image">
    <el-upload
      multiple
      :action="uploadImgUrl"
      list-type="picture-card"
      :on-success="handleUploadSuccess"
      :before-upload="handleBeforeUpload"
      :limit="limit"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      ref="imageUpload"
      :before-remove="handleDelete"
      :show-file-list="true"
      :headers="headers"
      :file-list="fileList"
      :data="dataParams"
      :on-preview="handlePictureCardPreview"
      :class="{ hide: fileList.length >= limit, custom: custom }"
      :disabled="disabled"
    >
      <el-icon class="avatar-uploader-icon"><plus /></el-icon>
    </el-upload>
    <!-- 上传提示 -->
    <div class="el-upload__tip" v-if="showTip">
      请上传
      <template v-if="fileSize">
        大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
      </template>
      <template v-if="fileType">
        格式为 <b style="color: #f56c6c">{{ fileType.join('/') }}</b>
      </template>
      的文件
    </div>

    <el-dialog v-model="dialogVisible" title="预览" width="800px" append-to-body>
      <img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
    </el-dialog>
  </div>
</template>

<script setup>
import { getToken } from '@/utils/auth'
import { delGoodsImgDetail, delComboImgDetail } from '@/api/meal/goods'

const props = defineProps({
  modelValue: [String, Object, Array],
  // 图片数量限制
  limit: {
    type: Number,
    default: 5
  },
  // 大小限制(MB)
  fileSize: {
    type: Number,
    default: 5
  },
  // 文件类型, 例如['png', 'jpg', 'jpeg']
  fileType: {
    type: Array,
    default: () => ['png', 'jpg', 'jpeg']
  },
  // 是否显示提示
  isShowTip: {
    type: Boolean,
    default: true
  },
  //上传类型  1-图片，2-视频
  uploadType: {
    type: String,
    default: '1'
  },
  //模块
  modelType: {
    type: String,
    default: ''
  },
  // 是否校验图片比例是3:2
  validateAspectRatio3To2: {
    type: Boolean,
    default: false
  },
  // 是否校验图片比例是3:2
  validateAspectRatio5To4: {
    type: Boolean,
    default: false
  },
  // 数组格式的图片尺寸限制[width: number, height: number]
  imagePx: {
    type: Array,
    default: () => []
  },
  // 自定义上传框大小
  custom: {
    type: Boolean,
    default: false
  },
  // 是否可以上传
  disabled: {
    type: Boolean,
    default: false
  },
  // 上传图片大小范围
  validateRange: {
    type: Boolean,
    default: false
  }
})
const { proxy } = getCurrentInstance()
const emit = defineEmits(['update:modelValue', 'deleteImage'])
const number = ref(0)
const uploadList = ref([])
const dialogImageUrl = ref('')
const dialogVisible = ref(false)
const { VITE_APP_BASE_API: baseUrl, VITE_GLOB_UPLOAD_BYTYPE_URL } = import.meta.env
const uploadImgUrl = ref(`${baseUrl}${VITE_GLOB_UPLOAD_BYTYPE_URL}`) // 上传的图片服务器地址(根据类型上传)
const headers = ref({ Authorization: 'Bearer ' + getToken() })
const fileList = ref([])
const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize))
const dataParams = computed(() => {
  const baseParams = {
    type: props.uploadType,
    validateAspectRatio3To2: props.validateAspectRatio3To2,
    validateAspectRatio5To4: props.validateAspectRatio5To4,
    validateRange: props.validateRange
  }
  console.log('props.validateRange', props.validateRange)
  if (props.imagePx.length) {
    baseParams.imagePx = JSON.stringify(props.imagePx)
  }
  return baseParams
})
watch(
  () => props.modelValue,
  (val) => {
    if (val) {
      // 首先将值转为数组
      const list = Array.isArray(val) ? val : props.modelValue.toString().split(',')
      // 然后将数组转为对象数组
      fileList.value = list.map((item) => {
        if (typeof item === 'string') {
          item = { name: item, url: item, id: item.id ? null : item.id }
        }
        return item
      })
    } else {
      fileList.value = []
      return []
    }
  },
  { deep: true, immediate: true }
)

// 上传前loading加载
function handleBeforeUpload(file) {
  let isImg = false
  if (props.fileType.length) {
    let fileExtension = ''
    if (file.name.lastIndexOf('.') > -1) {
      fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
    }
    isImg = props.fileType.some((type) => {
      if (file.type.indexOf(type) > -1) return true
      if (fileExtension && fileExtension.indexOf(type) > -1) return true
      return false
    })
  } else {
    isImg = file.type.indexOf('image') > -1
  }
  if (!isImg) {
    proxy.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join('/')}图片格式文件!`)
    return false
  }
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize
    if (!isLt) {
      proxy.$modal.msgError(`上传图片大小不能超过 ${props.fileSize} MB!`)
      return false
    }
  }
  proxy.$modal.loading('正在上传图片，请稍候...')
  number.value++
}

// 文件个数超出
function handleExceed() {
  proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`)
}

// 上传成功回调
function handleUploadSuccess(res, file) {
  if (res.code === 200) {
    uploadList.value.push({
      name: res.data.url,
      url: res.data.url,
      resourceId: res.data.resourceId,
      resourceType: res.data.resourceType
    })
    uploadedSuccessfully()
  } else {
    number.value--
    proxy.$modal.closeLoading()
    proxy.$modal.msgError(res.msg)
    proxy.$refs.imageUpload.handleRemove(file)
    uploadedSuccessfully()
  }
}

// 删除图片
const delId = ref(null)
function handleDelete(file) {
  const findex = fileList.value.map((f) => f.id).indexOf(file.id)
  if (findex > -1 && uploadList.value.length === number.value) {
    if (props.modelType && props.modelType === 'goods') {
      delId.value = fileList.value[findex].id
      if (delId.value) {
        delGoodsImgDetail(delId.value).then((res) => {
          fileList.value.splice(findex, 1)
          emit('update:modelValue', fileList.value)
        })
      } else {
        const uindex = fileList.value.findIndex((o) => o.uid === file.uid)
        fileList.value.splice(uindex, 1)
        emit('update:modelValue', fileList.value)
      }
    } else if (props.modelType && props.modelType === 'comboDetail') {
      delId.value = fileList.value[findex].id
      if (delId.value) {
        delComboImgDetail(delId.value).then((res) => {
          fileList.value.splice(findex, 1)
          emit('update:modelValue', fileList.value)
        })
      } else {
        const uindex = fileList.value.findIndex((o) => o.uid === file.uid)
        fileList.value.splice(uindex, 1)
        emit('update:modelValue', fileList.value)
      }
    } else {
      fileList.value.splice(findex, 1)
      emit('update:modelValue', fileList.value)
    }

    return false
  }
}

// 上传结束处理
function uploadedSuccessfully() {
  if (number.value > 0 && uploadList.value.length === number.value) {
    fileList.value = fileList.value.filter((f) => f.url !== undefined).concat(uploadList.value)
    uploadList.value = []
    number.value = 0
    // emit('update:modelValue', listToString(fileList.value))
    emit('update:modelValue', fileList.value)
    proxy.$modal.closeLoading()
  }
}
// 上传失败
function handleUploadError() {
  proxy.$modal.msgError('上传图片失败')
  proxy.$modal.closeLoading()
}

// 预览
function handlePictureCardPreview(file) {
  dialogImageUrl.value = file.url
  dialogVisible.value = true
}

// 对象转成指定字符串分隔
function listToString(list, separator) {
  let strs = ''
  separator = separator || ','
  for (let i in list) {
    if (undefined !== list[i].url && list[i].url.indexOf('blob:') !== 0) {
      strs += list[i].url.replace(baseUrl, '') + separator
    }
  }
  return strs != '' ? strs.substr(0, strs.length - 1) : ''
}
</script>

<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
:deep(.hide .el-upload--picture-card) {
  display: none;
}

.custom {
  width: 102px !important;
  height: 74px !important;
}
:deep(.custom .el-upload--picture-card) {
  width: 102px !important;
  height: 74px !important;
}
:deep(.custom .el-upload-list--picture-card) {
  width: 102px !important;
  height: 74px !important;
}
:deep(.custom .el-upload-list--picture-card .el-upload-list__item) {
  width: 102px !important;
  height: 74px !important;
}
</style>
